公开(公告)号：US20180035366A1

公开(公告)日：2018-02-01

申请号：US15373330

申请日：2016-12-08

Applicant: QUALCOMM Incorporated

Inventor： Mahboobul Alem ,  Madhan Jaganathan ,  Benjamin Gibbs ,  Suresh Nethirananthan ,  Ramachandran Kandasamy ,  Sriharsha Guntanoor

IPC: H04W48/16 ,  H04W72/04

CPC classification number: H04W48/16 ,  H04K3/226 ,  H04K3/822 ,  H04K2203/18 ,  H04W72/04 ,  H04W84/12

Abstract: Various aspects of the disclosure relate to determining whether a signal detection function is properly detecting for a signal. In an example implementation, the signal detection function detects radar signals. If the signal detection function is not functioning as desired, communication on at least one wireless communication channel may be disabled.

公开(公告)号：US10171151B1

公开(公告)日：2019-01-01

申请号：US15640184

申请日：2017-06-30

Applicant: QUALCOMM Incorporated

Inventor： Madhan Jaganathan ,  Xiaoxin Zhang ,  Ahmed Ragab Elsherif

IPC: H04B1/59 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/0456 ,  H04L27/26

Abstract: This disclosure provides systems, methods and apparatus for wireless communication. In one aspect, a method of wireless communication includes utilizing a sounding procedure to obtain compressed beamforming (CBF) information. The sounding procedure may be a single-user or multi-user sounding procedure. The CBF information may contain various information regarding a particular channel that an access point may use for transmission. The information may include per-tone SNR information which may be processed to determine characteristics of the channel. Various techniques may be utilized to determine the further characteristics of the channel. The determined characteristics of the channel may then be used to determine an appropriate guard interval (GI) between symbols that are to be transmitted. Appropriate GI selection in wireless communications may facilitate higher throughput while decreasing overhead due to unnecessary idle time.

公开(公告)号：US20190007114A1

公开(公告)日：2019-01-03

申请号：US15640184

申请日：2017-06-30

Applicant: QUALCOMM Incorporated

Inventor： Madhan Jaganathan ,  Xiaoxin Zhang ,  Ahmed Ragab Elsherif

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/04 ,  H04B1/59 ,  H04L27/26

Abstract: This disclosure provides systems, methods and apparatus for wireless communication. In one aspect, a method of wireless communication includes utilizing a sounding procedure to obtain compressed beamforming (CBF) information. The sounding procedure may be a single-user or multi-user sounding procedure. The CBF information may contain various information regarding a particular channel that an access point may use for transmission. The information may include per-tone SNR information which may be processed to determine characteristics of the channel. Various techniques may be utilized to determine the further characteristics of the channel. The determined characteristics of the channel may then be used to determine an appropriate guard interval (GI) between symbols that are to be transmitted. Appropriate GI selection in wireless communications may facilitate higher throughput while decreasing overhead due to unnecessary idle time.

公开(公告)号：US20180324801A1

公开(公告)日：2018-11-08

申请号：US15585099

申请日：2017-05-02

Applicant: QUALCOMM Incorporated

Inventor： BadriSrinivasan Sampathkumar ,  Madhan Jaganathan ,  Ahmed Ragab Elsherif

IPC: H04W72/04 ,  H04B7/0452 ,  H04B17/309 ,  H04B1/38

CPC classification number: H04W72/0453 ,  H04B1/38 ,  H04B7/0452 ,  H04B17/309 ,  H04L45/24 ,  H04W84/12 ,  H04W88/08

Abstract: Apparatuses and methods for reducing channel correlation between wireless nodes are disclosed. An apparatus may receive channel state information (CSI) from each of a plurality of wireless nodes and determine, for each of the plurality of wireless nodes, a level of channel correlation with other wireless nodes based, at least in part, on the received CSI. The apparatus may identify one or more of the plurality of wireless nodes for which the determined level of channel correlation is greater than or equal to a value, and then generate, for at least one of the identified wireless nodes, an instruction requesting at least one of the identified wireless nodes to adjust a parameter by an amount based on the determined level of channel correlation. The apparatus may provide the instruction for transmission to the at least one of the identified wireless nodes.

公开(公告)号：US20180295573A1

公开(公告)日：2018-10-11

申请号：US15481106

申请日：2017-04-06

Applicant: QUALCOMM Incorporated

Inventor： Ravi Gidvani ,  Sandip HomChaudhuri ,  Zhanfeng Jia ,  BadriSrinivasan Sampathkumar ,  Alireza Raissinia ,  Srinivas Katar ,  Madhan Jaganathan ,  Xiaolong Huang

IPC: H04W52/02 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may communicate with a plurality of stations in a basic service set (BSS) according to a target wakeup time (TWT) slot duration. The AP may identify one or more congestion or interference factors for the BSS. In some cases, the AP may identify a congestion score based at least in part on at least one of the one or more congestion factors from one or more stations that can be part of its own BSS, and an interference score based at least in part on at least one of the one or more interference factors form one or more stations that are not part of AP's BSS. In some cases, the AP may modify the TWT slot duration based at least in part on the congestion score and the interference score.

公开(公告)号：US20180242344A1

公开(公告)日：2018-08-23

申请号：US15932209

申请日：2018-02-16

Applicant: QUALCOMM Incorporated

Inventor： Xiaolong Huang ,  Madhan Jaganathan ,  Nathaniel David Houghton ,  Madhavan Nair ,  Srinivas Katar ,  Ahmed Ragab Elsherif

IPC: H04W72/12 ,  H04W72/04

CPC classification number: H04W72/1257 ,  H04W72/04 ,  H04W72/1252 ,  H04W84/12

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus may be configured to determine a scheduling metric for each respective station of a plurality of stations. The scheduling metric for each station may be based on an effective spatial-time-frequency physical layer (PHY) capability for the station and a consumption rate of spatial-time-frequency resources by the respective station. The effective spatial-time-frequency PHY capability for the station may be a product of a target percentage of spatial-time resources allocated to the station, an effective number of spatial streams supported by the respective station, and a maximum bandwidth. The consumption rate of spatial-time-frequency resources may be a transmit opportunity (TXOP) moving average of consumption rate by the station. The apparatus may be configured to schedule each station of the plurality of stations for communication based on the determined scheduling metric for each respective station.